Answer : Gaseous water molecules condense when they cooled. Liquid water molecules evaporate when they heated.
Explanation :
Condensation : It is a process in which a phase changes from gaseous state to liquid state. This process occurs when the water molecules in the air cool down and they join together to form liquid water.
Evaporation : It is a process in which a phase changes from liquid state to gaseous state. This process occurs when the water is heated, the molecules in the water move and vibrate quickly that they escape into the atmosphere as water vapor.
O A. It can be easily manipulated to represent changes that occur
slowly.
O B. All parts of the entire solar system can be modeled in the same
way.
O C. The model shows only how moon phases happen.
O D. The actual Sun-Earth-Moon system moves too quickly to be
studied directly.
The Sun-Earth-Moon system model using three balls is beneficial because it can easily demonstrate changes that occur slowly, like the orbits and rotations of the Earth and Moon.
The model of the Sun-Earth-Moon system using three balls offers several benefits. However, the most accurate statement regarding its advantages is, it can be easily manipulated to represent changes that occur slowly (Option A). A few movements in this system, such as the rotation of the Earth and Moon, and their orbit around the Sun, occur relatively slowly. Therefore, a physical model can be used to demonstrate these movements exceptionally well. Other options are not accurate as this model does not represent all parts of the solar system (Option B), it does not only show moon phases (Option C), and the real Sun-Earth-Moon system doesn't move too quickly to be studied directly (Option D).
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Answer:
A. it can be easily manipulated to represent changes that occur slowly.
b) form only between hydrogen and oxygen atoms within a molecule.
c) form only between a weak electronegative atom and hydrogen.
d) involve a transfer of electrons.
e) form weak interactions but can provide structural stability when many are found in a single molecule.
Answer:
Option e.
Explanation:
The option 'e' fact about Hydrogen bonds are correct, that is; ''form weak interactions but can provide structural stability when many are found in a single molecule''.
So, what is this Hydrogen bond?
Hydrogen bonds is a kind of strong dipole- dipole attractions. Hydrogen bonding occurs as a result of the bonding between hydrogen and strongly electronegative atoms for example oxygen, Fluorine and so on.
Since we now know what Hydrogen bond is, let us take a look at the options.
(a) for the first option, we can see from above meaning of Hydrogen bonds that Hydrogen bonds occur between Hydrogen and a strong Electronegative atom. So, this option is wrong.
(b). Option 'b' is also wrong Because Hydrogen bonds does not occur between hydrogen and oxygen atoms ONLY but also with other strong Electronegative atoms such as oxygen.
(c). Option 'c' is wrong because between a strong and not only between a weak electronegative atom and hydrogen.
(d). Option 'd' is also not correct.
(e). Option 'e' is correct. Hydrogen bonds contribute to the effect of boiling and melting point of substance, solubilty, dimerization, strength of bonds, shape of molecules and so on
B. O – H
C. S – Cl
D. H – Cl
E. Cl – Cl
Answer: B. lipids
Explanation:
When an individual has an energy surplus, the extra energy is stored in the body as lipids. Lipids are used for energy in the long term
Answer:
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